Check whether there is a non printable character in the unix variables

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# 1  
Old 06-23-2011
Check whether there is a non printable character in the unix variables

cp $l_options $srcdirfile $destdirfile
If i want to check whether there is a non printable character in the variables
$l_options $srcdirfile $destdirfile
how it can be done?
# 2  
Old 06-23-2011
The most obvious way would be using the complement of the [:print:] character class.

# 3  
Old 06-23-2011
Sorry can you elaborate on that ..i am not getting much help on this in google
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